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[CHEW]

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- Fix formatting, comments.
- Delete an empty directory.

svn path=/trunk/; revision=43386
This commit is contained in:
Dmitry Gorbachev 2009-10-12 03:27:45 +00:00
parent ac4cdf694c
commit 27f05c27a8
4 changed files with 88 additions and 76 deletions
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11
reactos/include/reactos/chew/chew.h
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@ -1,7 +1,7 @@
/* /*
* COPYRIGHT: See COPYING in the top level directory * COPYRIGHT: See COPYING in the top level directory
* PROJECT: ReactOS kernel * PROJECT: ReactOS kernel
* FILE: include/chew/chew.h * FILE: include/reactos/chew/chew.h
* PURPOSE: Common Highlevel Executive Worker * PURPOSE: Common Highlevel Executive Worker
* *
* PROGRAMMERS: arty (ayerkes@speakeasy.net) * PROGRAMMERS: arty (ayerkes@speakeasy.net)
@ -14,15 +14,16 @@
* Initialize CHEW, given a device object (since IoAllocateWorkItem relies on * Initialize CHEW, given a device object (since IoAllocateWorkItem relies on
* it). * it).
*/ */
VOID ChewInit( PDEVICE_OBJECT DeviceObject ); VOID ChewInit(PDEVICE_OBJECT DeviceObject);
/** /**
* Shutdown CHEW, waits for remaining work items. * Shutdown CHEW, waits for remaining work items.
*/ */
VOID ChewShutdown(); VOID ChewShutdown(VOID);
/** /**
* Creates and queues a work item. * Creates and queues a work item.
*/ */
BOOLEAN ChewCreate BOOLEAN ChewCreate(VOID (*Worker)(PVOID), PVOID WorkerContext);
( VOID (*Worker)(PVOID), PVOID WorkerContext );
#endif/*_REACTOS_CHEW_H*/ #endif/*_REACTOS_CHEW_H*/

0
reactos/include/reactos/chew/chew/.gitignore vendored
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57
reactos/lib/drivers/chew/workqueue.c
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@ -1,15 +1,17 @@
/* /*
* COPYRIGHT: See COPYING in the top level directory * COPYRIGHT: See COPYING in the top level directory
* PROJECT: ReactOS kernel * PROJECT: ReactOS kernel
* FILE: drivers/lib/chew/workqueue.c * FILE: lib/drivers/chew/workqueue.c
* PURPOSE: Common Highlevel Executive Worker * PURPOSE: Common Highlevel Executive Worker
* *
* PROGRAMMERS: arty (ayerkes@speakeasy.net) * PROGRAMMERS: arty (ayerkes@speakeasy.net)
*/ */
#include <ntddk.h> #include <ntddk.h>
#include <chew/chew.h> #include <chew/chew.h>
#define NDEBUG #define NDEBUG
//#include <debug.h>
#define FOURCC(w,x,y,z) (((w) << 24) | ((x) << 16) | ((y) << 8) | (z)) #define FOURCC(w,x,y,z) (((w) << 24) | ((x) << 16) | ((y) << 8) | (z))
#define CHEW_TAG FOURCC('C','H','E','W') #define CHEW_TAG FOURCC('C','H','E','W')
@ -19,64 +21,73 @@ LIST_ENTRY WorkQueue;
KSPIN_LOCK WorkQueueLock; KSPIN_LOCK WorkQueueLock;
KEVENT WorkQueueClear; KEVENT WorkQueueClear;
typedef struct _WORK_ITEM { typedef struct _WORK_ITEM
{
LIST_ENTRY Entry; LIST_ENTRY Entry;
PIO_WORKITEM WorkItem; PIO_WORKITEM WorkItem;
VOID (*Worker)( PVOID WorkerContext ); VOID (*Worker)(PVOID WorkerContext);
PVOID WorkerContext; PVOID WorkerContext;
} WORK_ITEM, *PWORK_ITEM; } WORK_ITEM, *PWORK_ITEM;
VOID ChewInit( PDEVICE_OBJECT DeviceObject ) { VOID ChewInit(PDEVICE_OBJECT DeviceObject)
{
WorkQueueDevice = DeviceObject; WorkQueueDevice = DeviceObject;
InitializeListHead( &WorkQueue ); InitializeListHead(&WorkQueue);
KeInitializeSpinLock( &WorkQueueLock ); KeInitializeSpinLock(&WorkQueueLock);
KeInitializeEvent(&WorkQueueClear, NotificationEvent, TRUE); KeInitializeEvent(&WorkQueueClear, NotificationEvent, TRUE);
} }
VOID ChewShutdown() { VOID ChewShutdown(VOID)
{
KeWaitForSingleObject(&WorkQueueClear, Executive, KernelMode, FALSE, NULL); KeWaitForSingleObject(&WorkQueueClear, Executive, KernelMode, FALSE, NULL);
} }
VOID NTAPI ChewWorkItem( PDEVICE_OBJECT DeviceObject, PVOID ChewItem ) { VOID NTAPI ChewWorkItem(PDEVICE_OBJECT DeviceObject, PVOID ChewItem)
{
PWORK_ITEM WorkItem = ChewItem; PWORK_ITEM WorkItem = ChewItem;
KIRQL OldIrql; KIRQL OldIrql;
WorkItem->Worker( WorkItem->WorkerContext ); WorkItem->Worker(WorkItem->WorkerContext);
IoFreeWorkItem( WorkItem->WorkItem ); IoFreeWorkItem(WorkItem->WorkItem);
KeAcquireSpinLock(&WorkQueueLock, &OldIrql); KeAcquireSpinLock(&WorkQueueLock, &OldIrql);
RemoveEntryList(&WorkItem->Entry); RemoveEntryList(&WorkItem->Entry);
if (IsListEmpty(&WorkQueue)) if (IsListEmpty(&WorkQueue))
KeSetEvent(&WorkQueueClear, 0, FALSE); KeSetEvent(&WorkQueueClear, 0, FALSE);
KeReleaseSpinLock(&WorkQueueLock, OldIrql); KeReleaseSpinLock(&WorkQueueLock, OldIrql);
ExFreePoolWithTag(WorkItem, CHEW_TAG); ExFreePoolWithTag(WorkItem, CHEW_TAG);
} }
BOOLEAN ChewCreate BOOLEAN ChewCreate(VOID (*Worker)(PVOID), PVOID WorkerContext)
( VOID (*Worker)( PVOID ), PVOID WorkerContext ) { {
PWORK_ITEM Item; PWORK_ITEM Item;
Item = ExAllocatePoolWithTag Item = ExAllocatePoolWithTag(NonPagedPool,
( NonPagedPool, sizeof(WORK_ITEM),
sizeof( WORK_ITEM ), CHEW_TAG);
CHEW_TAG );
if( Item ) { if (Item)
Item->WorkItem = IoAllocateWorkItem( WorkQueueDevice ); {
if( !Item->WorkItem ) { Item->WorkItem = IoAllocateWorkItem(WorkQueueDevice);
ExFreePool( Item ); if (!Item->WorkItem)
{
ExFreePool(Item);
return FALSE; return FALSE;
} }
Item->Worker = Worker; Item->Worker = Worker;
Item->WorkerContext = WorkerContext; Item->WorkerContext = WorkerContext;
ExInterlockedInsertTailList( &WorkQueue, &Item->Entry, &WorkQueueLock ); ExInterlockedInsertTailList(&WorkQueue, &Item->Entry, &WorkQueueLock);
KeResetEvent(&WorkQueueClear); KeResetEvent(&WorkQueueClear);
IoQueueWorkItem( Item->WorkItem, ChewWorkItem, DelayedWorkQueue, Item ); IoQueueWorkItem(Item->WorkItem, ChewWorkItem, DelayedWorkQueue, Item);
return TRUE; return TRUE;
} else { }
else
{
return FALSE; return FALSE;
} }
} }